This issue is related to either missing or mismatched
files/packages/hashs in WinSxS and/or incorrect information in the registry.
You can try running sfc /scannow, which rarely resolves the error, try
an "in-place upgrade", which rarely resolves the error, then try the
System Update Readiness Tool [CheckSUR ] and hope that it resolves the
error or, go over the log it creates to find the specific location[s]
where the issue exists and then edit the registry to delete the
incorrect registry subkeys. [WINDOWS\Logs\CBS\CheckSUR.log]
Description of the System Update Readiness Tool for Windows Vista, for
Windows Server 2008, for Windows Server 2008 R2 Release Candidate, and
for Windows 7 Release Candidate
As an alternative, you can go over the CBS.log located at
WINDOWS\Logs\CBS, starting at the bottom of the log and work your way up
until you locate the 8000ffff error. However, the CBS.log can be humongous.
As a point of reference to this and other "unresolvable" Vista update
errors, such as 80070490, see:
How to overcome error 0x80070490 when installing updates in Windows
Needless to say, back up any registry subkeys before deleting them.
The question remains though ... why does it keep reoccurring ?
The July release of CheckSUR should resolve this error, key word being
> Hi PA Bear, thanks for the response. I tried all the suggestions you
> mentioned already but I appreciate your help.
> The computer is running SP1 and no updates are installing. Currently there
> are about 20 or so updates outstanding. I've tried installing one at a time;
> downloading the update, etc. to no avail. SP2 won't install at this point
> I guess I'm going to have to open up an MS support incident.
> "PA Bear [MS MVP]" wrote:
>>Is the computer running Vista, Vista SP1, or Vista SP2 right now? (Just a
>>question, not a recommendation!)
>>Error when you download updates using Windows Update or Microsoft Update:
>>Your client has lots & lots of company (95 posts - 73 authors):
>>Have you ever opened a free support incident about this?
>>Start a free Windows Update support incident request:
>>For home users, no-charge support is available by calling 1-866-PCSAFETY in
>>the United States and in Canada or by contacting your local Microsoft
>>subsidiary. There is no-charge for support calls that are associated with
>>Support for Windows Update:
>>For more information about how to contact your local Microsoft subsidiary
>>for security update support issues, visit the International Support Web
>>For enterprise customers, support for security updates is available through
>>your usual support contacts.
>>~Robear Dyer (PA Bear)
>>MS MVP-Windows (IE, OE, Security, Shell/User)
>>AumHa VSOP & Admin; DTS-L.net
>>>I have a client who has had to reinstall windows 3 times already. We are
>>>going to reinstall it again. The user has many many programs which
>>>hours of configuration.
>>>When going to Windows update, the updates fail with 8000ffff.
>>>I've tried everything to fix this problem, including looking for
>>>HKLM\components, uninstalling 929777. This machine doesn't have 4 GB of
>>>tried resetting permissions (file and registry).
>>>Can someone please advise how to fix this? This is extremely frustrating
>>>the user and for IT people who must support this operating system.